1116291720 has 32 divisors (see below), whose sum is σ = 3348875520. Its totient is φ = 297677760.

The previous prime is 1116291719. The next prime is 1116291733. The reversal of 1116291720 is 271926111.

It is a super-2 number, since 2×1116291720² = 2492214408281116800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4651096 + ... + 4651335.

It is an arithmetic number, because the mean of its divisors is an integer number (104652360).

Almost surely, 2^1116291720 is an apocalyptic number.

1116291720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1116291720 is an abundant number, since it is smaller than the sum of its proper divisors (2232583800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1116291720 is a wasteful number, since it uses less digits than its factorization.

1116291720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9302445 (or 9302441 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 30.

The square root of 1116291720 is about 33410.9520965805. The cubic root of 1116291720 is about 1037.3514089225.

The spelling of 1116291720 in words is "one billion, one hundred sixteen million, two hundred ninety-one thousand, seven hundred twenty".